Can I change my email address and password on itunes but still open it with the old email and password since my husband has and uses the other email account?

Question

Purchased iphone years ago using our only email address and recently this year my husband finally decided to get the iphone 4 using our email with no intentions on syncing it to computer.  In July I purchased the iphone4 and just recently installed the upgrade ios5 and since then decided to get my own email address but all my devices and itunes account is under our email address and not my new address.  Now he decides to upgrade his phone to ios5 and now we get each others new apps, music and if we get texted though imessage. I assume this is because we have the same email and password account.
How can i change the itune account to my new e-mail address, but my husband keep the same itunes login all on one itune account? or is this possible?

Answer 1

If you change the primary email, you must use that one to login in with, as the primary email IS your AppleID.
If you go to https://appleid.apple.com you can login and change your information for your AppleID account, but you will  see that the AppleID = primary email address.  So, no, there is no way to change that, and still have your husband log in with the old AppleID/email.
Your husband can still use your AppleID after you change the email addres, just using that new email and password (ie. you can both still use the same AppleID, but it now will defacto be your new email address).
Or, if it is just a means to avoid the collisions of iMessage texts, just have your husband create his own AppleID just for use with iMessage.  You can still both use your AppleID for the iTunes and App stores, but in the iMessage settings, he can use his own AppleID instead of yours.
In short - you can each have multiple AppleIDs, and you do not have to use the same AppleID for both purchases, syncing and so forth AND iMessage - iMessage settings can use a different AppleID from the other things.